if you meet a guy with this name and he isn't a fob (fresh off the boat), then he clearly decided to keep the name even though he grew up in america, given the option to change it like most asian americans do. or at least go by a nickname.

he'll most likely be decent looking with a great personality. he'll probably be really smart too. not the "i know a lot so i'm smart" type of person, but rather the type to stomp on IQ tests. other than that, he'll be the type of person who's pretty good at everything he does. yes that includes anal sex. he'll also be known to get a lot of girls for his nunchuku skills, bow hunting skills, and computer hacking skills. you know, because girls only like guys with great skills.

oh, and he's probably a fucking ninja.

it's a name. that's it. you don't use it as an adjective or a verb. sorry. if you're thanh, then you're thanh. if you're not, then you're not.